Certain kinds of dynamically enabled :hover rules that affect descendants don't work.
rdar://problem/27580049
Created attachment 284969 [details] patch
Comment on attachment 284969 [details] patch Attachment 284969 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1787244 New failing tests: fast/selectors/hover-invalidation-descendant-dynamic.html
Created attachment 284970 [details] Archive of layout-test-results from ews121 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews121 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.5
No hover on iOS so you'll have to skip the test there, or you can do a more complex UIScriptController test.
Created attachment 284988 [details] patch
Comment on attachment 284988 [details] patch Clearing flags on attachment: 284988 Committed r203976: <http://trac.webkit.org/changeset/203976>
All reviewed patches have been landed. Closing bug.